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Finding the Fourth Proportional to 445,628, 668,529.48 and 196,310

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Solution

The fourth proportional to 445,628, 668,529.48 and 196,310 is: 294,503.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,628 : 668,529.48 = 196,310 : x
  2. Step 2: Convert to fraction form
    445,628/668,529.48 = 196,310/x
  3. Step 3: Cross multiply
    445,628x = 668,529.48 × 196,310
  4. Step 4: Simplify right side
    445,628x = 131,239,022,218.80
  5. Step 5: Solve for x
    x = 131,239,022,218.80/445,628
  6. Step 6: Final answer
    x = 294,503.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.